/**
 * Licensed to Apereo under one or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information regarding copyright ownership. Apereo
 * licenses this file to you under the Apache License, Version 2.0 (the "License"); you may not use
 * this file except in compliance with the License. You may obtain a copy of the License at the
 * following location:
 *
 * <p>http://www.apache.org/licenses/LICENSE-2.0
 *
 * <p>Unless required by applicable law or agreed to in writing, software distributed under the
 * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
 * express or implied. See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apereo.portal.tenants;

import java.util.Set;
import org.apache.commons.lang3.StringUtils;

/**
 * Useful for extra user input validation in Create and Update tenant operations.
 *
 * @since 4.3
 */
public class AttributeValidatingOperationsListener extends AbstractTenantOperationsListener {

    protected AttributeValidatingOperationsListener() {
        super("attribute-validating");
    }

    private Set<String> requiredAttributes;

    public void setRequiredAttributes(Set<String> requiredAttributes) {
        this.requiredAttributes = requiredAttributes;
    }

    @Override
    public void validateAttribute(final String key, final String value) throws Exception {
        if (requiredAttributes.contains(key)) {
            if (StringUtils.isBlank(value)) {
                throw new IllegalArgumentException("Missing required attribute:  " + key);
            }
        }
    }
}
